<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Spring Security Example</title>
</head>
<body>
 <!--<div th:if="${param.error}">Invalid username and password.</div>-->
 <span th:if="${param.error}" th:text="${session.SPRING_SECURITY_LAST_EXCEPTION.message}"></span>
 <div th:if="${param.logout}">You have been logged out.</div>
 <form th:action="@{/login}" method="post">
     <div><label>UserName:<input type="text" name="username"/></label></div>
     <div><label>Password:<input type="password" name="password"/></label></div>
     <div><input type="submit" value="Sign In"/></div>
 </form>
</body>
</html>
